A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 ESM

Summary:

Perl could be made to crash if it received specially craftedinput.

Software Description:- perl: Practical Extraction and Report Language

Details:

USN-3478-1 fixed two vulnerabilities in Perl. This updateprovides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Jakub Wilk discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-12883)

Update instructions:

The problem can be corrected by updating your system to the followingpackage versions:

Ubuntu 12.04 ESM: perl 5.14.2-6ubuntu2.6

In general, a standard system update will make all the necessarychanges.